Ernie Janes / Big Ben and Union Jack Flag, Westminster, London, England, UK, June 2013.

Merryn Thomas / View of Lauterbrunnen village and waterfall, Bernese Oberland, Switzerland, June 2012.

Dong Lei / Sauromatum diversifolium flower with prayer flags in the background, Mt Qomolangma National Park, Qinghai Tibet Plateau, China.

Dong Lei / Large-billed crow (Corvus macrorhynchos) in front of prayer flags, Mt Qomolangma National Park, Qinghai Tibet Plateau, China.

Jeff Foott / Western Blue Flag Iris (Iris missouriensis) flowering in meadow, Middle Cathedral Rock, Lower Cathedral Rock, Yosemite National Park, California

Thomas Marent / Flag-footed Bug (Anisocelis flavolineata), Tatama National Park, Colombia

Thomas Marent / Flag-footed Bug (Anisocelis flavolineata), Tatama National Park, Colombia

Alex Mustard / Flag cabrilla (Epinephelus labriformis) looking out from its lair between colourful volcanic boulders. Darwin Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

Claudio Contreras / Flag Cabrilla (Epinephelus labriformis), Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Staffan Widstrand / Wild Wonders of China / Buddhist prayer flags along the pilgrimage route around Meili Snow Mountain, 6740 m, a Sacred mountain for Tibetan Buddhists, as yet unclimbed, at the waterfall near Yubeng, Yunnan, China, October 20...

Staffan Widstrand / Wild Wonders of China / Wild Wonders of China. team holding up their flag in the lichen-covered (Usnea longissima) temperate cloud forest, in the Meili Snow Mountain National park, Yunnan China. October

Gavin Hellier / Timelapse from day to night of American flags flying around the Washington Monument, Washington DC, USAJune 2016. Hellier